/*
 * @Author: chen haoxuan
 * @Date: 2021-05-10 21:34:51
 * @LastEditTime: 2021-05-11 20:04:07
 */
#include<iostream>
using namespace std;
class Date
{
    public:
        Date(int,int,int);
        Date(int,int);
        Date(int);
        Date();
        void display();
    private:
        int month;
        int day;
        int year;
};
Date::Date(int m,int d,int y):month(m),day(d),year(y){}
Date::Date(int m,int d):month(m),day(d){year=2005;}
Date::Date(int m):month(m){day=1;year=2005;}
Date::Date(){month=1;day=1;year=2005;}
void Date::display()
{
    cout<<month<<"/"<<day<<"/"<<year<<endl;
}
int main()
{
    Date d1(10,13,2005);
    Date d2(12,30);
    Date d3(10);
    Date d4;
    d1.display();
    d2.display();
    d3.display();
    d4.display();
    system("pause");
    return 0;
}